Firearm.



Patented Apr. 11, 1911.

Il lu. )111 .www u, 10 .ma Y 11 ,/N 4 mm 7U L 9 0.2 A12/Ni 7 Q 9, r 4 f lllllllll ./,l 1 w w 0o g 1 RUDOLF mom/IER, 0r BUiaarEsr, AUSTRIA-HUNGARY.

FIREARM.

989,242. Original application filed November 5,

To ,ZLwho/m (it may concern: l

Be it known that L Bmicnr` FROMMER, a

subject ofl the King of Hungary, residing at Budapest, in the Empire of Austria-Hungary, have invented certain new and useful' Improvements in Firearms, of which the following is a specification.

My invention' relates to a trigger-device for lire-arms, such as described in my application for patent filed November 5th,`1907,

Ser. No. 400815, of which this is a division;

The trigger-device lis so constructed, that either afsingle shot can be fired or the firing continued as long as the pressure on the trigger is maintained.

The trigger-device, as shown in the ,accompanying drawing, is adapted for lirearms, in which the trigger is operatedby the exertion of pressure on -a knob or the like, there being-provided a slidable triggerarm, `provided with a cam-face in comblnaa projection with-a setting-lever, havin tion adapted to engage with sai cam-face, so as to retract the trigger@ arm, thereby causing the sear to be released uponeach forward movement of the trigger-arm. In combination with the trigger-device, a safetydevice lis provided, .which prevents firing, exceptwhen the breech-bolt is completely closed. This safety-device, however, does not form any part ofvmy present invention.

In the drawin s: Figure 1 shows the trigger-device set or continuous firing; Fig. 2 shows the trigger-device set for single iiring; Fig. 3 is a plan view of the scar and tumbler, showing a portion of the frame in section, and Fig. 4 is a plan view of the trigger-arm and the setting-levera portion of the :frame being shown insection.

The iiring-pin 25 is provided 'with a projection 9, in front of which projection lies the nose'21 of the scar 1.- The tumbler 7 is controlled by a spring 16, in such a way,

that its nose 22 is forced also in front of.

is forced zupward by a spring .5 and can be pressed slightly downward against the pres sure of said spring. If the gun shall be set specification of tettersratent. Patented Apr; 11, 1ML

1907, Serial No. 400,815. Divided and this application led January 10, 1911. Serial No. 601,850.

i for single firing, the setting-lever 6 is brought into the position shown Vin Fig. 2. By this movement of the lever 6,'the nose 22 at the end of the tumbler is withdrawn from in front of the projection 9 of the lirin pin 25.

lThis movement of the tumbler is e ected by a projection 8, extending from the pivot of the setting-lever 6. At the same time, a projection 10 of the setting-lever is moved into the path of the cam-surface 4 on the tongue 2 of the trigger-arm v 1. When, therefore,

vthe latter is pushed forward for the purpose of firing a shot, the Sear 19 is .turned by the projection 11 about its pivot, sothat vthe nose 12 -on the sear is withdrawn from in front of the projection 9 of the vtiring pin 25, and a shot is fired. Duri-ng the movement of the .trigger-arm 1, the tongue 2 is slightly, depressed by thev pro'ection 10, which passes over the cam-sur ace 4.' In this way, the edge 13 of the sear 19 is permitted to spring back fromvthe edge 14 of. the projection 11 at the moment, when the nose 12 of the sear 19 has released the firingpin 25. The scar is then moved again by its spring 15 to its position of rest, in which it is ready to catch the tiring pin, as shown in Fig. 2. Now, when the `trigger-arm 1 is pulled "back, the edge 14 is also moved back and the projection 11 is slightly moved downward, the tongue 2 being moved about its pivot 3. The sear- 19 will hold the firingpin in the position shown in Fig. 2, as long as the trigger-arm is not pushed forward again.

If the gun shall be set for continuous {iring, the setting-lever 6 is turned into the po sitlon shown in Fig. 1, in which position the projections 8 and 10 of the lever are both thrown out of engagement withthe tumbler 7 and the camp-surface 4. The tumbler is moved. by its spring 16 Vinto the -position shown in Fig. 1, in which lthe nose 22 will lie in front of the projection 9 of the tiring-pin 25. The tumbler 7 is automatically brought into connection by the cam-surface 17 of the .breech-bolt 26, which cam-surface engages a corresponding cam-surface 18 on the tumbler. When the ytrigger-arm 1 is moved forward, toward the left in Fig. 1, the tongue will not be depressed by the projection 10 of' the setting-lever 6, since the cam-surface 4 the edge 13 of the seat 19, so that the latter remains disengaged, and the firing,` therefore, Will automatically continue, as long as the pressure on the trigger arm is maintained, the nose 12 of the Sear 19 being held out of engagement with the projection 9 of the firing-pin 25.

In combination with the trigger-device,

there is further provided a' safety-means,

whereby firing will be prevented, except when the breech-bolt 26 is completely closed, To this end, the bottom edge of the breechbolt 26 is provided with two -longitudinal ribs 20 (Figs. 1 `and 2), which ribs couated, when the breech-boltis closed, so that the noses at this point can be Withdrawn. In

this Way, neither the sear nor the tumbler can release the firing-pin, unless the breechbolt is completely closed'. In order that the sear and tumbler, after a shot has been tired,

' can regain their original positions to intercept the firing pin on the forward movement of the latter with the breech-bolt, the ribs 20 are also recessed at their extreme rear ends, so that When the breech-bolt returns to its rear or openposition, the said recesses in the ribs 2O .will lie over the noses 12 and 22, ermitting them to be returned bytheir springs to their positions, in which they can engage the projection 9 of the firing-pin 25.

I claim Trigger-device, comprising in combination With a breech-bolt, a firing-pin, a Sear, a tumbler, a slidable trigger-arm provided with a cam-face, a setting-lever having a. projection adapted to engage with said cam face, so as to depress the said trigger-arm and cause the release of the said scar upon each forward movement of the said triggerarm. Y

In testimony whereof I aix my signature in presence of tWo Witnesses. l,

RUDOLF FROMMER.

lVitnesses i FLP SCHN, EDMUND FLAvA. Q 

